Page 1 of 2 1 2 LastLast
Results 1 to 10 of 17
  1. #1
    It's a JEEP thing...You wouldn't Understand dirtdude35's Avatar
    Join Date
    May 2009
    Location
    Hurst tx
    Posts
    473

    Coffman Water Box

    i was was wondering about the coffman water boxes. i am looking for some cheaper upgrades for my 750 slt and i found these and was wondering about the sound. also i found them on http://www.jetskihaven.com for a good price have you heard anything about them? here is the link to the waterbox http://www.jetskihaven.com/jetskipro...p?prodnum=3027
    What other mods that are a good price do y'all suggest?


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Little to no performance gain from waterboxes. ALOT of noise gain from them though.

    I've never had a Coffman, but of the 2 I did have, the noise was much louder than stock.

    What kind of gains are you looking for? Accel or top speed?

    You seldom get BOTH!!!

  3. #3
    It's a JEEP thing...You wouldn't Understand dirtdude35's Avatar
    Join Date
    May 2009
    Location
    Hurst tx
    Posts
    473
    Quote Originally Posted by xlint89 View Post
    Little to no performance gain from waterboxes. ALOT of noise gain from them though.

    I've never had a Coffman, but of the 2 I did have, the noise was much louder than stock.

    What kind of gains are you looking for? Accel or top speed?

    You seldom get BOTH!!!
    i am looking for more of accel upgrade because i pull a lot of people and a little more would be nice to get people out of the water quicker. i am looking at a water box cause i just love a good sounding motor, but who does not.
    i was looking a some reeds but i don't now what kind to get?

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Post #11 are my suggestions for better accel.

    http://www.greenhulk.net/forums/show...=109881&page=2

  5. #5
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Make sure your pump is in good working order with tight tolerances. (3-8 thousandths clearance between impeller and wear ring)

    A Skat trak 13/18 swirl for your SLT 750 would work very well.

    A good ride plate will help you plane faster on a 2 seater, not sure how much faster it would do on a 3?

    I also think you'd benefit from the bored exit nozzle. It gives a noticeable boost to bottom end.

    You'd get a little boost from Boyesen or Carbon Tech reeds. ($80-150)

    V Force are better IMO, but will run much more NEW. (around $350) I and chopper 901 have these for sale if interested. Mine are Like New (about 3 hrs on them) for $175.

  6. #6
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
    Join Date
    Jul 2007
    Location
    Cedar Rapids,Iowa
    Posts
    6,381
    +1
    23
    If you can find a Lake City ride plate,It is longer and has 2 fins,which helps with tracking and would also help from the rear end getting skidded out in a turn.

    Also a jet works valve will help with the quick accel after idling.

  7. #7

    Join Date
    Jun 2008
    Location
    Bullhead City AZ.
    Posts
    451
    +1
    2
    Quote Originally Posted by dirtdude35 View Post
    i was was wondering about the coffman water boxes. i am looking for some cheaper upgrades for my 750 slt and i found these and was wondering about the sound. also i found them on http://www.jetskihaven.com for a good price have you heard anything about them? here is the link to the waterbox http://www.jetskihaven.com/jetskipro...p?prodnum=3027
    What other mods that are a good price do y'all suggest?
    I have bought stuff from them no problem I looked at the waterbox you have listed there is a good used one for cheaper only $50.00 not the 85.00 that your looking at
    http://www.jetskihaven.com/jetskipro...p?prodnum=3028

  8. #8
    It's a JEEP thing...You wouldn't Understand dirtdude35's Avatar
    Join Date
    May 2009
    Location
    Hurst tx
    Posts
    473
    Quote Originally Posted by xlint89 View Post
    Make sure your pump is in good working order with tight tolerances. (3-8 thousandths clearance between impeller and wear ring)

    A Skat trak 13/18 swirl for your SLT 750 would work very well.

    A good ride plate will help you plane faster on a 2 seater, not sure how much faster it would do on a 3?

    I also think you'd benefit from the bored exit nozzle. It gives a noticeable boost to bottom end.

    You'd get a little boost from Boyesen or Carbon Tech reeds. ($80-150)

    V Force are better IMO, but will run much more NEW. (around $350) I and chopper 901 have these for sale if interested. Mine are Like New (about 3 hrs on them) for $175.
    i will be ordering parts after this weekend for my pump. on labor day the bearings went out and i have not be able to order the parts yet so when rebuild it i will look at the gap. do your reeds come with cages too or just the reeds?

  9. #9
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
    Join Date
    Jul 2007
    Location
    Cedar Rapids,Iowa
    Posts
    6,381
    +1
    23
    V Force reeds would be the cages included,They will not fit a stock cage.The V Force consist of 4 sets of reeds per cage,Stock are only 2 sets.

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Correct ^^^^^^

    Cages are included.

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 0
    Last Post: 11-01-2010, 12:17 PM
  2. Water Box Mods!
    By Angelse68cal in forum 4-Tec Performance
    Replies: 12
    Last Post: 08-05-2005, 01:39 PM
  3. water box mod ?
    By Krazy-K in forum 4-Tec Performance
    Replies: 1
    Last Post: 07-26-2005, 06:59 PM
  4. water box mod
    By peter in forum 4-Tec Performance
    Replies: 7
    Last Post: 07-09-2005, 10:52 AM
  5. Water Box Mod
    By Red Devil in forum 4-Tec Performance
    Replies: 27
    Last Post: 05-17-2005, 04:56 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •